Chromium Nitrate Nonahydrate (CAS 7789-02-8) Comprehensive Guide
Table of Contents
1. Product Specifications & Comparative Analysis
| Parameter | Specification |
|---|---|
| CAS Number | 7789-02-8 |
| Molecular Formula | CrH18N3O18 |
| Molecular Weight | 400.15 g/mol |
| Appearance | Purple orthorhombic crystals |
| Melting Point | 60°C |
| Solubility | Highly soluble in water, ethanol, acids |
| Purity Grades | CP (98%), AR (99%), GR (99.5%) |
Vendor Comparison
| Supplier | Purity | Packaging | Key Feature |
|---|---|---|---|
| Sigma-Aldrich | 98% | 100g/500g | ISO-certified production |
| Shanghai Xinyu Bio | 99% | 25kg drums | Bulk industrial supply |
| Kangdisi Chem | 99.2% | 1kg/5kg | Low heavy metal content |
2. Industrial Applications
Catalyst Manufacturing
Essential precursor for chromium-based catalysts in petroleum refining and chemical synthesis processes.
Ceramic Industry
Key component in glaze formulations (0.5-2% concentration) for color stabilization at 1200-1400°C firing temperatures.
Textile Processing
Mordant for cotton/polyester blends, improving dye uptake by 40-60% compared to non-chromium treatments.
Surface Engineering
Critical electrolyte additive for trivalent chromium electroplating baths (pH 3.5-4.2, 45-55°C operation).
3. Usage Scenarios
Case 1: Glass Manufacturing
Added at 0.1-0.3% wt% to molten glass batches to achieve UV-blocking green tint in architectural glass production.
Case 2: Corrosion Inhibition
5-10% chromium nitrate solutions used in closed-loop cooling systems, reducing steel corrosion rates by 85%.
Case 3: Specialty Chemicals
Intermediate in synthesizing chromium acetylacetonate complexes for polymerization catalysts.
4. Client Case Studies
Shanghai Xinyu Biotechnology
Procured 2MT monthly for catalyst production in acetic acid manufacturing, achieving 92% process efficiency.
Dongzheng Chemical Co.
Implemented chromium nitrate-based pretreatment system reducing textile dye wastewater by 35% annually.
Guangdong Electroplating Plant
Transitioned from hexavalent to trivalent chromium plating using our nitrate formulation, meeting RoHS compliance.
5. Inquiry & Procurement
Request technical specifications/MSDS:
Email: info@vivalr.com
Tel: (86) 15866781826
Bulk Order Benefits
- 25kg drum: $45/kg
- 500kg pallet: $42/kg
- Custom purity (98-99.9%)
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